查询词典 accelerated motion

The results of computation show that this method is very effective for reducing and controlling the transverse oscillation of wave motion and for the calculation of wave particle velocity of wave motion on free surface, w...

计算表明：这种0—1混合型边界元的剖分方式，在控制和减缓波浪"横向振动"幅度及水面单元水质点波动速度的计算方面，显示出了其独到的优越和灵活之处，为时域内的波浪非线性变形计算提供了时步上的数值保证

The stepping-motor-driven warp let-off unit is applied to 1515-PJR flexible rapier loom. The warp tension is measured by using IBM-PC and CRAS software package. A new measuring index of warp tension for comparing the performance of warp let-off motion is given. The statistical analysis on the warp tension in the weaving process from full warp beam to empty is conducted. Also, the spectrum of the dynamic warp tension is analyzed, and the influences of the warp let-off motion' timing on warp tension are discussed.

本文研制的步进电机驱动送经装置在1515-PJR挠性剑杆织机上进行了实际织造运行，用IBM-PC微机和CRAS软件包对经纱张力进行了现场测试，提出了一项新的衡量送经装置性能好坏的经纱张力测量指标，对从满织轴到空轴织造过程中的经纱张力水平进行了统计分析，对经纱动态张力信号进行了频谱分析，并研究了送经运动的时间安排对经纱张力的影响。

Based on the existed wave mechanics and by means of the study of the motion and effect of particles in the propagation of waves, this article puts forward that mechanics' effect in the propagation of waves is not only comprised of "stress from deformation" but also of another different form of force——"applied force from motion" which is decided by velocity.

核工业二九O研究所，韶关 512026摘要：在原有波动学的基础上，通过对波传播质点的运动和作用进行研究，提出了波传播的力学作用不仅有因形变产生的应力，还存在着另一种由速度决定的不同形式的力——"动作用力"。

Just as sound is a wave motion, light in the same sense, may be regarded as a wave motion.

正如声音是一种波动一样，光也同样可以看作是一种波动。

The piston is attached to the top of a connecting rod by a pin,called a piston pin or wrist pin.the bottom of the connecting rod is attached to the crankshaft.the connecting rod transmits the up-and-down motion of the piston to the crankshaft,which changes it into rotary motion.the connecting rod is mounted on the crankshaft with large bearings called rod bearings.

这个活塞被一个叫活塞销或轴颈销的销子连接在连杆的上部。连杆的底部被连接在曲轴上。连杆把活塞的上下运动传递给曲轴转变成旋转运动。连杆通过一个大的叫做杆轴承的轴承（其实就是滑动轴承，分成两个半圆轴瓦）安装在曲轴上。

First we detect the motion region based on Wronskian change detection model in order to eliminate disturbing background and obtain sub-image of motion object.

该方法首先利用变化检测法检测出运动目标区域，剔除静止背景的干扰，得到运动目标子图像。

In case of simple background, we use image difference for motion region detection, and then adopt the original Chan-Vese model for face contour detection and tracking, while in case of complex background, we use Wronskian change detector for motion region detection, and then adopt the modified Chan-Vese model for face contour detection and tracking.

对于简单背景情况，首先利用图像差分进行运动区域检测，然后在运动区域内采用Chan-Vese模型检测人脸轮廓，并根据其定位结果计算下一帧中新的运动区域和提取人脸轮廓；对于背景复杂的情况，则用朗斯基变化检测算子来首先检测出运动区域，然后在运动区域内采用改进的Chan-Vese模型检测人脸轮廓，并根据其定位结果计算下一帧中新的运动区域和提取人脸轮廓。

According to discrete conception, mechanism of image blur caused by uniform motion is analyzed. Mathematical models of image blur and restoration by uniform rotation motion are established by means of Z transform.

从离散直观角度分析了由匀速旋转运动引起图像模糊的机理，通过Z变换方法，建立了由匀速旋转运动引起图像模糊的退化模型和恢复模型，并给出了快速算法。

The Newton the first laws finger object is had the character keeping original motion state , the inertia theorem is also called: Under the circumstances of not accepting an outside force or being accepted an outside force by zero, the object always keeps uniform motion or motionless.

牛顿第一定律指物体具有保持原来运动状态的性质，也被称为惯性定理：在不受外力或所受外力为零的状态下，物体总保持匀速运动或静止。

The equations of the towed cable motion are based on Ablow and Schechter model and six degree-freedom ordinary differential equations are used in the analysis of the motion of a towed body. The partial differential equations are discretized by finite difference method and the transient values of towed body depth and cable tension are computed by Newton Iteration when the heave compensation system performs and the length of the cable varies.

拖缆动力学模型基于Ablow and Schechter模型，拖体采用水下运载体六自由度方程模拟，运用有限差分法离散偏微分方程组和牛顿迭代法计算变缆长情况下拖体深度与拖缆各点张力的动态取值。

So it was last week in Selma , alabama.

上星期在亚拉巴马州塞尔马市发生的事件也是这样一个转折点。

The group also spearheads various social programs in China.

该组织还带头参与中国的各种社会活动。